If the said hospital is government hospital, then it is a public authority and the RTI Act is applicable to it.

You could file a RTI application to the public authority and under section 2(f) of the RTI Act, obtain all the medical records and reports including procedures adopted, diagnosis administered, daily medical updates and all other relevant details.

Even though private hospitals are not directly covered under the RTI Act, on account of various CIC judgments, you can obtain medical records of a patient from private hospitals and also through the medical council of India (MCI).